Alameda County Science & Engineering Fair 22 17 Calaveras County Science Fair 2 6 Central California Regional Science, Math, & Engineering Fair 70 57 Chico Science Fair 4 6 Contra Costa County Science & Engineering Fair 1 14 Greater San Diego Science & Engineering Fair 44 97 Humboldt County Science Fair 18 18 Kern County Science Fair 47 43 Lassen County Science Fair 5 6 Los Angeles County Science Fair 45 104 Mendocino County Science Fair 17 14 Monterey County Science Fair 23 22 Placer County STEM Expo 7 6 RIMS Inland Science & Engineering Fair 1 64 Sacramento Regional Science & Engineering Fair 9 14 San Benito County Science Fair 3 6 San Francisco Bay Area Science Fair 7 23 San Joaquin County Science Fair 6 7 San Mateo Science, Math, & Technology Fair 43 36 Santa Barbara Science Fair 23 24 Santa Cruz County Science & Engineering Fair 28 40 Synopsys Silicon Valley Science and Technology Championship 29 97 Synopsys Sonoma County Science Fair 9 6 Tulare County Science Fair 7 6 Tuolumne County Science Fair 1 6 Ventura County Science Fair 1 42